Abstract
This research relates to the starting characteristics of a lead type operating circuit for a high pressure mercury vapor lamp.
The research has been conducted in the following sequence. Firstly, When main voltage is applied, Fourier series are developed on voltage and current of distorted wave at each element of the operating circuit, then using the Fourier expansion, the each harmonic character at each element of the operating circuit is obtained theoretically, and at the same time experiment is performed.
The following are derived from the results of the research.
(1) From the voltage and current of distorted wave at each element of the operating circuit, the impedance (i, e. its resistance and reactance component) is obtained for each harmonic, and their characteristics are clarified.
(2) From the voltage and current of distorted wave at each element of the operating circuit, the vector diagram is obtained for each harmonic, and their characteristics are clarified.
(3) As a result of distorted wave analysis at each element of the operating circuit and impedance calculation of each fundamental wave, a fact is fount that having a constant-current characteristics to the operating circuit, because of the total impedance are nearly constant.
